2 Unix SMB/CIFS implementation.
4 Winbind daemon for ntdom nss module
6 Copyright (C) by Tim Potter 2000-2002
7 Copyright (C) Andrew Tridgell 2002
8 Copyright (C) Jelmer Vernooij 2003
9 Copyright (C) Volker Lendecke 2004
11 This program is free software; you can redistribute it and/or modify
12 it under the terms of the GNU General Public License as published by
13 the Free Software Foundation; either version 2 of the License, or
14 (at your option) any later version.
16 This program is distributed in the hope that it will be useful,
17 but WITHOUT ANY WARRANTY; without even the implied warranty of
18 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 GNU General Public License for more details.
21 You should have received a copy of the GNU General Public License
22 along with this program; if not, write to the Free Software
23 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
30 #define DBGC_CLASS DBGC_WINBIND
32 BOOL opt_nocache = False;
33 static BOOL interactive = False;
35 extern BOOL override_logfile;
37 struct event_context *winbind_event_context(void)
39 static struct event_context *ctx;
41 if (!ctx && !(ctx = event_context_init(NULL))) {
42 smb_panic("Could not init winbind event context\n");
47 /* Reload configuration */
49 static BOOL reload_services_file(void)
56 pstrcpy(fname,lp_configfile());
57 if (file_exist(fname,NULL) && !strcsequal(fname,dyn_CONFIGFILE)) {
58 pstrcpy(dyn_CONFIGFILE,fname);
63 ret = lp_load(dyn_CONFIGFILE,False,False,True,True);
72 /**************************************************************************** **
74 **************************************************************************** */
76 static void fault_quit(void)
81 static void winbindd_status(void)
83 struct winbindd_cli_state *tmp;
85 DEBUG(0, ("winbindd status:\n"));
87 /* Print client state information */
89 DEBUG(0, ("\t%d clients currently active\n", winbindd_num_clients()));
91 if (DEBUGLEVEL >= 2 && winbindd_num_clients()) {
92 DEBUG(2, ("\tclient list:\n"));
93 for(tmp = winbindd_client_list(); tmp; tmp = tmp->next) {
94 DEBUGADD(2, ("\t\tpid %lu, sock %d\n",
95 (unsigned long)tmp->pid, tmp->sock));
100 /* Print winbindd status to log file */
102 static void print_winbindd_status(void)
107 /* Flush client cache */
109 static void flush_caches(void)
111 /* We need to invalidate cached user list entries on a SIGHUP
112 otherwise cached access denied errors due to restrict anonymous
113 hang around until the sequence number changes. */
115 wcache_invalidate_cache();
118 /* Handle the signal by unlinking socket and exiting */
120 static void terminate(void)
126 /* Remove socket file */
127 pstr_sprintf(path, "%s/%s",
128 WINBINDD_SOCKET_DIR, WINBINDD_SOCKET_NAME);
133 TALLOC_CTX *mem_ctx = talloc_init("end_description");
134 char *description = talloc_describe_all(mem_ctx);
136 DEBUG(3, ("tallocs left:\n%s\n", description));
137 talloc_destroy(mem_ctx);
144 static BOOL do_sigterm;
146 static void termination_handler(int signum)
149 sys_select_signal(signum);
152 static BOOL do_sigusr2;
154 static void sigusr2_handler(int signum)
157 sys_select_signal(SIGUSR2);
160 static BOOL do_sighup;
162 static void sighup_handler(int signum)
165 sys_select_signal(SIGHUP);
168 static BOOL do_sigchld;
170 static void sigchld_handler(int signum)
173 sys_select_signal(SIGCHLD);
176 /* React on 'smbcontrol winbindd reload-config' in the same way as on SIGHUP*/
177 static void msg_reload_services(int msg_type, struct process_id src,
178 void *buf, size_t len, void *private_data)
180 /* Flush various caches */
182 reload_services_file();
185 /* React on 'smbcontrol winbindd shutdown' in the same way as on SIGTERM*/
186 static void msg_shutdown(int msg_type, struct process_id src,
187 void *buf, size_t len, void *private_data)
192 static struct winbindd_dispatch_table {
193 enum winbindd_cmd cmd;
194 void (*fn)(struct winbindd_cli_state *state);
195 const char *winbindd_cmd_name;
196 } dispatch_table[] = {
200 { WINBINDD_GETPWNAM, winbindd_getpwnam, "GETPWNAM" },
201 { WINBINDD_GETPWUID, winbindd_getpwuid, "GETPWUID" },
203 { WINBINDD_SETPWENT, winbindd_setpwent, "SETPWENT" },
204 { WINBINDD_ENDPWENT, winbindd_endpwent, "ENDPWENT" },
205 { WINBINDD_GETPWENT, winbindd_getpwent, "GETPWENT" },
207 { WINBINDD_GETGROUPS, winbindd_getgroups, "GETGROUPS" },
208 { WINBINDD_GETUSERSIDS, winbindd_getusersids, "GETUSERSIDS" },
209 { WINBINDD_GETUSERDOMGROUPS, winbindd_getuserdomgroups,
210 "GETUSERDOMGROUPS" },
212 /* Group functions */
214 { WINBINDD_GETGRNAM, winbindd_getgrnam, "GETGRNAM" },
215 { WINBINDD_GETGRGID, winbindd_getgrgid, "GETGRGID" },
216 { WINBINDD_SETGRENT, winbindd_setgrent, "SETGRENT" },
217 { WINBINDD_ENDGRENT, winbindd_endgrent, "ENDGRENT" },
218 { WINBINDD_GETGRENT, winbindd_getgrent, "GETGRENT" },
219 { WINBINDD_GETGRLST, winbindd_getgrent, "GETGRLST" },
221 /* PAM auth functions */
223 { WINBINDD_PAM_AUTH, winbindd_pam_auth, "PAM_AUTH" },
224 { WINBINDD_PAM_AUTH_CRAP, winbindd_pam_auth_crap, "AUTH_CRAP" },
225 { WINBINDD_PAM_CHAUTHTOK, winbindd_pam_chauthtok, "CHAUTHTOK" },
226 { WINBINDD_PAM_LOGOFF, winbindd_pam_logoff, "PAM_LOGOFF" },
227 { WINBINDD_PAM_CHNG_PSWD_AUTH_CRAP, winbindd_pam_chng_pswd_auth_crap, "CHNG_PSWD_AUTH_CRAP" },
229 /* Enumeration functions */
231 { WINBINDD_LIST_USERS, winbindd_list_users, "LIST_USERS" },
232 { WINBINDD_LIST_GROUPS, winbindd_list_groups, "LIST_GROUPS" },
233 { WINBINDD_LIST_TRUSTDOM, winbindd_list_trusted_domains,
235 { WINBINDD_SHOW_SEQUENCE, winbindd_show_sequence, "SHOW_SEQUENCE" },
237 /* SID related functions */
239 { WINBINDD_LOOKUPSID, winbindd_lookupsid, "LOOKUPSID" },
240 { WINBINDD_LOOKUPNAME, winbindd_lookupname, "LOOKUPNAME" },
241 { WINBINDD_LOOKUPRIDS, winbindd_lookuprids, "LOOKUPRIDS" },
243 /* Lookup related functions */
245 { WINBINDD_SID_TO_UID, winbindd_sid_to_uid, "SID_TO_UID" },
246 { WINBINDD_SID_TO_GID, winbindd_sid_to_gid, "SID_TO_GID" },
247 { WINBINDD_UID_TO_SID, winbindd_uid_to_sid, "UID_TO_SID" },
248 { WINBINDD_GID_TO_SID, winbindd_gid_to_sid, "GID_TO_SID" },
249 { WINBINDD_SIDS_TO_XIDS, winbindd_sids_to_unixids, "SIDS_TO_XIDS" },
250 { WINBINDD_ALLOCATE_UID, winbindd_allocate_uid, "ALLOCATE_UID" },
251 { WINBINDD_ALLOCATE_GID, winbindd_allocate_gid, "ALLOCATE_GID" },
252 { WINBINDD_SET_MAPPING, winbindd_set_mapping, "SET_MAPPING" },
253 { WINBINDD_SET_HWM, winbindd_set_hwm, "SET_HWMS" },
257 { WINBINDD_DUMP_MAPS, winbindd_dump_maps, "DUMP_MAPS" },
259 { WINBINDD_CHECK_MACHACC, winbindd_check_machine_acct, "CHECK_MACHACC" },
260 { WINBINDD_PING, winbindd_ping, "PING" },
261 { WINBINDD_INFO, winbindd_info, "INFO" },
262 { WINBINDD_INTERFACE_VERSION, winbindd_interface_version,
263 "INTERFACE_VERSION" },
264 { WINBINDD_DOMAIN_NAME, winbindd_domain_name, "DOMAIN_NAME" },
265 { WINBINDD_DOMAIN_INFO, winbindd_domain_info, "DOMAIN_INFO" },
266 { WINBINDD_NETBIOS_NAME, winbindd_netbios_name, "NETBIOS_NAME" },
267 { WINBINDD_PRIV_PIPE_DIR, winbindd_priv_pipe_dir,
268 "WINBINDD_PRIV_PIPE_DIR" },
269 { WINBINDD_GETDCNAME, winbindd_getdcname, "GETDCNAME" },
271 /* Credential cache access */
272 { WINBINDD_CCACHE_NTLMAUTH, winbindd_ccache_ntlm_auth, "NTLMAUTH" },
276 { WINBINDD_WINS_BYNAME, winbindd_wins_byname, "WINS_BYNAME" },
277 { WINBINDD_WINS_BYIP, winbindd_wins_byip, "WINS_BYIP" },
281 { WINBINDD_NUM_CMDS, NULL, "NONE" }
284 static void process_request(struct winbindd_cli_state *state)
286 struct winbindd_dispatch_table *table = dispatch_table;
288 /* Free response data - we may be interrupted and receive another
289 command before being able to send this data off. */
291 SAFE_FREE(state->response.extra_data.data);
293 ZERO_STRUCT(state->response);
295 state->response.result = WINBINDD_PENDING;
296 state->response.length = sizeof(struct winbindd_response);
298 state->mem_ctx = talloc_init("winbind request");
299 if (state->mem_ctx == NULL)
302 /* Process command */
304 for (table = dispatch_table; table->fn; table++) {
305 if (state->request.cmd == table->cmd) {
306 DEBUG(10,("process_request: request fn %s\n",
307 table->winbindd_cmd_name ));
314 DEBUG(10,("process_request: unknown request fn number %d\n",
315 (int)state->request.cmd ));
316 request_error(state);
321 * A list of file descriptors being monitored by select in the main processing
322 * loop. fd_event->handler is called whenever the socket is readable/writable.
325 static struct fd_event *fd_events = NULL;
327 void add_fd_event(struct fd_event *ev)
329 struct fd_event *match;
331 /* only add unique fd_event structs */
333 for (match=fd_events; match; match=match->next ) {
335 SMB_ASSERT( match != ev );
342 DLIST_ADD(fd_events, ev);
345 void remove_fd_event(struct fd_event *ev)
347 DLIST_REMOVE(fd_events, ev);
351 * Handler for fd_events to complete a read/write request, set up by
352 * setup_async_read/setup_async_write.
355 static void rw_callback(struct fd_event *event, int flags)
360 todo = event->length - event->done;
362 if (event->flags & EVENT_FD_WRITE) {
363 SMB_ASSERT(flags == EVENT_FD_WRITE);
364 done = sys_write(event->fd,
365 &((char *)event->data)[event->done],
370 event->finished(event->private_data, False);
375 if (event->flags & EVENT_FD_READ) {
376 SMB_ASSERT(flags == EVENT_FD_READ);
377 done = sys_read(event->fd, &((char *)event->data)[event->done],
382 event->finished(event->private_data, False);
389 if (event->done == event->length) {
391 event->finished(event->private_data, True);
396 * Request an async read/write on a fd_event structure. (*finished) is called
397 * when the request is completed or an error had occurred.
400 void setup_async_read(struct fd_event *event, void *data, size_t length,
401 void (*finished)(void *private_data, BOOL success),
404 SMB_ASSERT(event->flags == 0);
406 event->length = length;
408 event->handler = rw_callback;
409 event->finished = finished;
410 event->private_data = private_data;
411 event->flags = EVENT_FD_READ;
414 void setup_async_write(struct fd_event *event, void *data, size_t length,
415 void (*finished)(void *private_data, BOOL success),
418 SMB_ASSERT(event->flags == 0);
420 event->length = length;
422 event->handler = rw_callback;
423 event->finished = finished;
424 event->private_data = private_data;
425 event->flags = EVENT_FD_WRITE;
429 * This is the main event loop of winbind requests. It goes through a
430 * state-machine of 3 read/write requests, 4 if you have extra data to send.
432 * An idle winbind client has a read request of 4 bytes outstanding,
433 * finalizing function is request_len_recv, checking the length. request_recv
434 * then processes the packet. The processing function then at some point has
435 * to call request_finished which schedules sending the response.
438 static void request_len_recv(void *private_data, BOOL success);
439 static void request_recv(void *private_data, BOOL success);
440 static void request_main_recv(void *private_data, BOOL success);
441 static void request_finished(struct winbindd_cli_state *state);
442 void request_finished_cont(void *private_data, BOOL success);
443 static void response_main_sent(void *private_data, BOOL success);
444 static void response_extra_sent(void *private_data, BOOL success);
446 static void response_extra_sent(void *private_data, BOOL success)
448 struct winbindd_cli_state *state =
449 talloc_get_type_abort(private_data, struct winbindd_cli_state);
451 if (state->mem_ctx != NULL) {
452 talloc_destroy(state->mem_ctx);
453 state->mem_ctx = NULL;
457 state->finished = True;
461 SAFE_FREE(state->request.extra_data.data);
462 SAFE_FREE(state->response.extra_data.data);
464 setup_async_read(&state->fd_event, &state->request, sizeof(uint32),
465 request_len_recv, state);
468 static void response_main_sent(void *private_data, BOOL success)
470 struct winbindd_cli_state *state =
471 talloc_get_type_abort(private_data, struct winbindd_cli_state);
474 state->finished = True;
478 if (state->response.length == sizeof(state->response)) {
479 if (state->mem_ctx != NULL) {
480 talloc_destroy(state->mem_ctx);
481 state->mem_ctx = NULL;
484 setup_async_read(&state->fd_event, &state->request,
485 sizeof(uint32), request_len_recv, state);
489 setup_async_write(&state->fd_event, state->response.extra_data.data,
490 state->response.length - sizeof(state->response),
491 response_extra_sent, state);
494 static void request_finished(struct winbindd_cli_state *state)
496 setup_async_write(&state->fd_event, &state->response,
497 sizeof(state->response), response_main_sent, state);
500 void request_error(struct winbindd_cli_state *state)
502 SMB_ASSERT(state->response.result == WINBINDD_PENDING);
503 state->response.result = WINBINDD_ERROR;
504 request_finished(state);
507 void request_ok(struct winbindd_cli_state *state)
509 SMB_ASSERT(state->response.result == WINBINDD_PENDING);
510 state->response.result = WINBINDD_OK;
511 request_finished(state);
514 void request_finished_cont(void *private_data, BOOL success)
516 struct winbindd_cli_state *state =
517 talloc_get_type_abort(private_data, struct winbindd_cli_state);
522 request_error(state);
525 static void request_len_recv(void *private_data, BOOL success)
527 struct winbindd_cli_state *state =
528 talloc_get_type_abort(private_data, struct winbindd_cli_state);
531 state->finished = True;
535 if (*(uint32 *)(&state->request) != sizeof(state->request)) {
536 DEBUG(0,("request_len_recv: Invalid request size received: %d\n",
537 *(uint32 *)(&state->request)));
538 state->finished = True;
542 setup_async_read(&state->fd_event, (uint32 *)(&state->request)+1,
543 sizeof(state->request) - sizeof(uint32),
544 request_main_recv, state);
547 static void request_main_recv(void *private_data, BOOL success)
549 struct winbindd_cli_state *state =
550 talloc_get_type_abort(private_data, struct winbindd_cli_state);
553 state->finished = True;
557 if (state->request.extra_len == 0) {
558 state->request.extra_data.data = NULL;
559 request_recv(state, True);
563 if ((!state->privileged) &&
564 (state->request.extra_len > WINBINDD_MAX_EXTRA_DATA)) {
565 DEBUG(3, ("Got request with %d bytes extra data on "
566 "unprivileged socket\n", (int)state->request.extra_len));
567 state->request.extra_data.data = NULL;
568 state->finished = True;
572 state->request.extra_data.data =
573 SMB_MALLOC_ARRAY(char, state->request.extra_len + 1);
575 if (state->request.extra_data.data == NULL) {
576 DEBUG(0, ("malloc failed\n"));
577 state->finished = True;
581 /* Ensure null termination */
582 state->request.extra_data.data[state->request.extra_len] = '\0';
584 setup_async_read(&state->fd_event, state->request.extra_data.data,
585 state->request.extra_len, request_recv, state);
588 static void request_recv(void *private_data, BOOL success)
590 struct winbindd_cli_state *state =
591 talloc_get_type_abort(private_data, struct winbindd_cli_state);
594 state->finished = True;
598 process_request(state);
601 /* Process a new connection by adding it to the client connection list */
603 static void new_connection(int listen_sock, BOOL privileged)
605 struct sockaddr_un sunaddr;
606 struct winbindd_cli_state *state;
610 /* Accept connection */
612 len = sizeof(sunaddr);
615 sock = accept(listen_sock, (struct sockaddr *)&sunaddr, &len);
616 } while (sock == -1 && errno == EINTR);
621 DEBUG(6,("accepted socket %d\n", sock));
623 /* Create new connection structure */
625 if ((state = TALLOC_ZERO_P(NULL, struct winbindd_cli_state)) == NULL) {
632 state->last_access = time(NULL);
634 state->privileged = privileged;
636 state->fd_event.fd = state->sock;
637 state->fd_event.flags = 0;
638 add_fd_event(&state->fd_event);
640 setup_async_read(&state->fd_event, &state->request, sizeof(uint32),
641 request_len_recv, state);
643 /* Add to connection list */
645 winbindd_add_client(state);
648 /* Remove a client connection from client connection list */
650 static void remove_client(struct winbindd_cli_state *state)
652 /* It's a dead client - hold a funeral */
662 /* Free any getent state */
664 free_getent_state(state->getpwent_state);
665 free_getent_state(state->getgrent_state);
667 /* We may have some extra data that was not freed if the client was
668 killed unexpectedly */
670 SAFE_FREE(state->response.extra_data.data);
672 if (state->mem_ctx != NULL) {
673 talloc_destroy(state->mem_ctx);
674 state->mem_ctx = NULL;
677 remove_fd_event(&state->fd_event);
679 /* Remove from list and free */
681 winbindd_remove_client(state);
685 /* Shutdown client connection which has been idle for the longest time */
687 static BOOL remove_idle_client(void)
689 struct winbindd_cli_state *state, *remove_state = NULL;
690 time_t last_access = 0;
693 for (state = winbindd_client_list(); state; state = state->next) {
694 if (state->response.result != WINBINDD_PENDING &&
695 !state->getpwent_state && !state->getgrent_state) {
697 if (!last_access || state->last_access < last_access) {
698 last_access = state->last_access;
699 remove_state = state;
705 DEBUG(5,("Found %d idle client connections, shutting down sock %d, pid %u\n",
706 nidle, remove_state->sock, (unsigned int)remove_state->pid));
707 remove_client(remove_state);
714 /* Process incoming clients on listen_sock. We use a tricky non-blocking,
715 non-forking, non-threaded model which allows us to handle many
716 simultaneous connections while remaining impervious to many denial of
719 static void process_loop(void)
721 struct winbindd_cli_state *state;
724 int maxfd, listen_sock, listen_priv_sock, selret;
725 struct timeval timeout, ev_timeout;
727 /* We'll be doing this a lot */
729 /* Handle messages */
733 run_events(winbind_event_context(), 0, NULL, NULL);
735 /* refresh the trusted domain cache */
737 rescan_trusted_domains();
739 /* Free up temporary memory */
742 main_loop_TALLOC_FREE();
744 /* Initialise fd lists for select() */
746 listen_sock = open_winbindd_socket();
747 listen_priv_sock = open_winbindd_priv_socket();
749 if (listen_sock == -1 || listen_priv_sock == -1) {
750 perror("open_winbind_socket");
754 maxfd = MAX(listen_sock, listen_priv_sock);
758 FD_SET(listen_sock, &r_fds);
759 FD_SET(listen_priv_sock, &r_fds);
761 timeout.tv_sec = WINBINDD_ESTABLISH_LOOP;
764 /* Check for any event timeouts. */
765 if (get_timed_events_timeout(winbind_event_context(), &ev_timeout)) {
766 timeout = timeval_min(&timeout, &ev_timeout);
769 /* Set up client readers and writers */
771 state = winbindd_client_list();
775 struct winbindd_cli_state *next = state->next;
777 /* Dispose of client connection if it is marked as
781 remove_client(state);
786 for (ev = fd_events; ev; ev = ev->next) {
787 if (ev->flags & EVENT_FD_READ) {
788 FD_SET(ev->fd, &r_fds);
789 maxfd = MAX(ev->fd, maxfd);
791 if (ev->flags & EVENT_FD_WRITE) {
792 FD_SET(ev->fd, &w_fds);
793 maxfd = MAX(ev->fd, maxfd);
799 selret = sys_select(maxfd + 1, &r_fds, &w_fds, NULL, &timeout);
806 if (errno == EINTR) {
810 /* Select error, something is badly wrong */
820 struct fd_event *next = ev->next;
822 if (FD_ISSET(ev->fd, &r_fds))
823 flags |= EVENT_FD_READ;
824 if (FD_ISSET(ev->fd, &w_fds))
825 flags |= EVENT_FD_WRITE;
827 ev->handler(ev, flags);
831 if (FD_ISSET(listen_sock, &r_fds)) {
832 while (winbindd_num_clients() >
833 WINBINDD_MAX_SIMULTANEOUS_CLIENTS - 1) {
834 DEBUG(5,("winbindd: Exceeding %d client "
835 "connections, removing idle "
837 WINBINDD_MAX_SIMULTANEOUS_CLIENTS));
838 if (!remove_idle_client()) {
839 DEBUG(0,("winbindd: Exceeding %d "
840 "client connections, no idle "
841 "connection found\n",
842 WINBINDD_MAX_SIMULTANEOUS_CLIENTS));
846 /* new, non-privileged connection */
847 new_connection(listen_sock, False);
850 if (FD_ISSET(listen_priv_sock, &r_fds)) {
851 while (winbindd_num_clients() >
852 WINBINDD_MAX_SIMULTANEOUS_CLIENTS - 1) {
853 DEBUG(5,("winbindd: Exceeding %d client "
854 "connections, removing idle "
856 WINBINDD_MAX_SIMULTANEOUS_CLIENTS));
857 if (!remove_idle_client()) {
858 DEBUG(0,("winbindd: Exceeding %d "
859 "client connections, no idle "
860 "connection found\n",
861 WINBINDD_MAX_SIMULTANEOUS_CLIENTS));
865 /* new, privileged connection */
866 new_connection(listen_priv_sock, True);
872 winbindd_check_cache_size(time(NULL));
875 /* Check signal handling things */
882 DEBUG(3, ("got SIGHUP\n"));
884 msg_reload_services(MSG_SMB_CONF_UPDATED, pid_to_procid(0), NULL, 0, NULL);
889 print_winbindd_status();
898 while ((pid = sys_waitpid(-1, NULL, WNOHANG)) > 0) {
899 winbind_child_died(pid);
906 int main(int argc, char **argv, char **envp)
909 static BOOL Fork = True;
910 static BOOL log_stdout = False;
911 static BOOL no_process_group = False;
912 struct poptOption long_options[] = {
914 { "stdout", 'S', POPT_ARG_VAL, &log_stdout, True, "Log to stdout" },
915 { "foreground", 'F', POPT_ARG_VAL, &Fork, False, "Daemon in foreground mode" },
916 { "no-process-group", 0, POPT_ARG_VAL, &no_process_group, True, "Don't create a new process group" },
917 { "interactive", 'i', POPT_ARG_NONE, NULL, 'i', "Interactive mode" },
918 { "no-caching", 'n', POPT_ARG_VAL, &opt_nocache, True, "Disable caching" },
925 /* glibc (?) likes to print "User defined signal 1" and exit if a
926 SIGUSR[12] is received before a handler is installed */
928 CatchSignal(SIGUSR1, SIG_IGN);
929 CatchSignal(SIGUSR2, SIG_IGN);
931 fault_setup((void (*)(void *))fault_quit );
932 dump_core_setup("winbindd");
936 /* Initialise for running in non-root mode */
940 set_remote_machine_name("winbindd", False);
942 /* Set environment variable so we don't recursively call ourselves.
943 This may also be useful interactively. */
945 if ( !winbind_off() ) {
946 DEBUG(0,("Failed to disable recusive winbindd calls. Exiting.\n"));
950 /* Initialise samba/rpc client stuff */
952 pc = poptGetContext("winbindd", argc, (const char **)argv, long_options,
953 POPT_CONTEXT_KEEP_FIRST);
955 while ((opt = poptGetNextOpt(pc)) != -1) {
957 /* Don't become a daemon */
967 if (log_stdout && Fork) {
968 printf("Can't log to stdout (-S) unless daemon is in foreground +(-F) or interactive (-i)\n");
969 poptPrintUsage(pc, stderr, 0);
973 if (!override_logfile) {
974 pstr_sprintf(logfile, "%s/log.winbindd", dyn_LOGFILEBASE);
975 lp_set_logfile(logfile);
977 setup_logging("winbindd", log_stdout);
980 DEBUG(1, ("winbindd version %s started.\n%s\n",
981 SAMBA_VERSION_STRING,
982 COPYRIGHT_STARTUP_MESSAGE) );
984 if (!reload_services_file()) {
985 DEBUG(0, ("error opening config file\n"));
989 if (!directory_exist(lp_lockdir(), NULL)) {
990 mkdir(lp_lockdir(), 0755);
1000 if (!secrets_init()) {
1002 DEBUG(0,("Could not initialize domain trust account secrets. Giving up\n"));
1006 /* Enable netbios namecache */
1010 /* Winbind daemon initialisation */
1012 if ( ! NT_STATUS_IS_OK(idmap_init()) ) {
1013 DEBUG(1, ("Could not init idmap! - Sid/[UG]id mapping will not be available\n"));
1017 nss_init( lp_winbind_nss_info() );
1020 /* Unblock all signals we are interested in as they may have been
1021 blocked by the parent process. */
1023 BlockSignals(False, SIGINT);
1024 BlockSignals(False, SIGQUIT);
1025 BlockSignals(False, SIGTERM);
1026 BlockSignals(False, SIGUSR1);
1027 BlockSignals(False, SIGUSR2);
1028 BlockSignals(False, SIGHUP);
1029 BlockSignals(False, SIGCHLD);
1031 /* Setup signal handlers */
1033 CatchSignal(SIGINT, termination_handler); /* Exit on these sigs */
1034 CatchSignal(SIGQUIT, termination_handler);
1035 CatchSignal(SIGTERM, termination_handler);
1036 CatchSignal(SIGCHLD, sigchld_handler);
1038 CatchSignal(SIGPIPE, SIG_IGN); /* Ignore sigpipe */
1040 CatchSignal(SIGUSR2, sigusr2_handler); /* Debugging sigs */
1041 CatchSignal(SIGHUP, sighup_handler);
1044 become_daemon(Fork, no_process_group);
1046 pidfile_create("winbindd");
1048 /* Ensure all cache and idmap caches are consistent
1049 before we startup. */
1051 if (winbindd_validate_cache()) {
1052 /* We have a bad cache, but luckily we
1053 just deleted it. Restart ourselves */
1055 /* Ensure we have no open low fd's. */
1056 for (i = 3; i < 100; i++) {
1059 return execve(argv[0], argv, envp);
1064 * If we're interactive we want to set our own process group for
1065 * signal management.
1067 if (interactive && !no_process_group)
1068 setpgid( (pid_t)0, (pid_t)0);
1073 /* Initialise messaging system */
1075 if (!message_init()) {
1076 DEBUG(0, ("unable to initialize messaging system\n"));
1080 /* React on 'smbcontrol winbindd reload-config' in the same way
1081 as to SIGHUP signal */
1082 message_register(MSG_SMB_CONF_UPDATED, msg_reload_services, NULL);
1083 message_register(MSG_SHUTDOWN, msg_shutdown, NULL);
1085 /* Handle online/offline messages. */
1086 message_register(MSG_WINBIND_OFFLINE, winbind_msg_offline, NULL);
1087 message_register(MSG_WINBIND_ONLINE, winbind_msg_online, NULL);
1088 message_register(MSG_WINBIND_ONLINESTATUS, winbind_msg_onlinestatus,
1091 poptFreeContext(pc);
1093 netsamlogon_cache_init(); /* Non-critical */
1095 if (!init_domain_list()) {
1096 DEBUG(0,("unable to initalize domain list\n"));
1102 smb_nscd_flush_user_cache();
1103 smb_nscd_flush_group_cache();
1105 /* Loop waiting for requests */
1110 trustdom_cache_shutdown();